IAS：2025年全球媒体质量报告（第20版）（英文版）

Ad fraud is a drain on advertising budgets, siphoning an estimated $100 billion of ad spend in 2024, while reducing ad efficacy and chipping away at publisher revenue.1 Running campaigns without fraud protections is risky — and leaves campaigns increasingly vulnerable to bad actors. Fraud rates for non-optimized campaigns have been on the rise since the first half of 2023. In 2024, fraud rates rose 19.0% from the year prior, reaching a four-year high of 10.9% by the end of 2024.